Commodities
PrimarySilver, Lead
SecondaryGold, Copper, Zinc
Commodity typeM
Deposit
Deposit typeVein
Deposit sizeY
WorkingsUnderground
Orebody formTABULAR
Ore controlVein In East-Trending Shear Zone And Follows A Dacite Dike, Ore At Intersection With Northwest-Trending Veins
Materials
Ore mineralsArgentite, Galena, Pyrite
GangueAnkerite, Calcite
Geology
Host rockQuartz Monzonite
Associated rockQuartz Monzonite,Dacite · Dacite Dike;Alaskite Dikes;Boulder Batholith, Butte Quartz Monzonite;Elkhorn Mountains Volcanics
StructureBoulder Batholith, South-Trending Syncline In Elkhorn Mountains Volcanics, East-Trending Shear Zone
Tectonic settingCordilleran Miogeosyncline
AlterationSericitization
Economic & production
Development statusPast Producer
First production1893
Identification
Deposit ID10105713
MRDS IDW014644
RegionNA
Data scoreB
Coordinates46.48796, -111.99255
References
ROBY, R. N., ACKERMAN, W. C., FULKERSON, F. B., AND CROWLEY, F. A., 1960, MINES AND MINERAL DEPOSITS, JEFFERSON COUNTY, MONT.: MONT. BUREAU OF MINES GEOL. BULL. 16, 122 P.SMEDES, H. W., 1966, GEOLOGY AND IGNEOUS PETROLOGY OF THE NORTHERN ELKHORN MOUNTAINS, JEFFERSON AND BROADWATER COUNTIES, MONT.: U.S. GEOL. SURV. PROF. PAPER 510, 116 P.MBMG BULL. 16